I have been given a piece of code by my supervisor but I don't understand the algorithm behind this code to make changes to it.
I know this code using a block and finds contours within the block but can someone please explain to me how it works, essentially giving me procedure?
I've added it to my drive - [link text](https://drive.google.com/file/d/0B7r5ZqdosV0zSXBRQ0xmR09lVk0/view?usp=sharing)
Thanks.
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